Air circulator



FIG. 1 is a front, top and right-side perspective view of an air circulator showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a right-side view thereof;

FIG. 7 is a left-side view thereof; and

FIG. 8 is a rear, top and left-side perspective view thereof.

The broken lines illustrate portions of the air circulator and form no part of the claimed design. 

CLAIM The ornamental design for an air circulator, as shown and described. 